摘要:
Reaction products of a microgel that contains carboxylic acid groups with a nitrogen-containing base have a high latency and high stability towards mechanical influences and are suitable as hardeners for one-component epoxy resin systems.
摘要:
Reaction products of a microgel that contains carboxylic acid groups with a nitrogen-containing base have a high latency and high stability towards mechanical influences and are suitable as hardeners for one-component epoxy resin systems.
摘要:
A composition, which comprises (a) a compound containing at least one epoxy group in inner position per molecule, obtained by epoxidation of a natural unsaturated oil or of its derivative; (b) an epoxy compound selected from the group consisting of glycidyl ethers, glycidyl esters and cycloaliphatic epoxides; (c) a polycarboxylic acid anhydride; (d) a compound of formula I, I, III or IV or an acid adduct of a compound of formula I, II, III or IV wherein R1 to R4 are each independently of one another hydrogen; C1-C18alkyl which is unsubstituted or substituted by one or more than one hydroxyl group amino group, halogen atom, cyano group, C1-C6alkoxy group or C1-C6cyanalkoxy group; C5-C14aryl, C6-C24aralkyl, C3-C14heteroaryl or C4-C14heteroaralkyl which are unsubstituted or substituted by one or more than one C1-C6alkyl group, C1-C6alkoxy group or halogen atom, n is an integer from 1 to 3, and R5 and R6 are each independently of the other C1-C6alkyl or, together with the nitrogen atom, form a five- or six-membered ring, and (e) 20-90% by weight, based on the entire composition, of a filler, the average diameter of the filler particles being from 0.1 &mgr;m to 5.0 mm, can be cured to products having a high Tg and are suitable in particular as encapsulating material for electrical and electronic components.
摘要:
A composition comprising (a) an epoxy resin having, on average, more than one 1,2-epoxy group per molecule, (b) a polyol as epoxy resin curing agent and (c) a solid microgel-amine adduct as accelerator has high latency, good storage stability and a wide processing window.
摘要:
Positive photoresist compositions which can be developed in aqueous-alkaline media, comprising(a) at least one homopolymer or copolymer containing acid-labile .alpha.-alkoxyalkyl ester groups,(b) at least one carboxyl-containing copolymer in which the content of carboxyl groups is from 0.40 to 5.50 mol/kg,(c) at least one compound which forms an acid on exposure to actinic radiation, and(d) an organic solvent,have high photosensitivity, a long shelf life of the components and of coatings produced therefrom and are particularly suitable as etch resists for the production of printed circuits.
摘要:
A method for controlling deceleration of a motor vehicle having an internal combustion engine with an automated clutch, in which method, when a deceleration is present, a deceleration fuel cutoff is carried out in order to generate a drag torque as a drive torque if the engine speed is higher than a deceleration fuel cutoff threshold wherein when a braking request is present, the effect of the engine speed is evaluated, a comparison is carried out between the expected engine speed or the current engine speed and the deceleration fuel cutoff threshold, and the internal combustion engine is adjusted to a deceleration mode or a deceleration fuel mode is maintained only if the expected or current engine speed is higher than the deceleration fuel cutoff threshold.
摘要:
A drive system for a plug-in hybrid motor vehicle, having an internal combustion engine, an electric motor, a high-voltage source, in particular a high-voltage battery which has a minimum setpoint state of charge, a generator, a clutch, at least one transmission, at least one drive axle and a control unit, with the internal combustion engine being mechanically connected to at least one drive axle, with a first drive mode, “depleting mode”, and a second drive mode, “sustaining mode”, being provided in the control unit, with a third drive mode, “increasing mode”, which can be manually activated being provided, said third drive mode providing a load point increase at the internal combustion engine in such a way that the high-voltage source can be charged during driving and therefore the first drive mode can be activated.
摘要:
A method for the preparation of a photocurable resin by a reaction comprising the following steps i) reacting a mixture of a novolak type epoxy resin (A) and a dicyclopentadiene-phenol glycidylether resin (B) with ii) an advancement component (C) containing at least 2 phenolic hydroxyl groups per molecule; iii) reacting with an unsaturated monocarboxylic acid (D); and iv) esterification of the unsaturated group containing resin obtained from the steps of i) to iii) with a polycarboxylic acid anhydride or a carboxylic acid anhydride (E) is disclosed.